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High-softening-point asphalt as well as preparation method and application thereof

A technology of high softening point asphalt and softening point, which is applied in the direction of carbon preparation/purification, chemical processing of tar pitch/petroleum pitch/natural pitch, solidification/crushing processing of tar pitch/petroleum pitch/natural pitch, etc., which can solve Problems such as high foaming pressure, popularization or practical application, to achieve the effect of reducing the cost of preparation

Active Publication Date: 2015-09-30
BAOWU CHARCOAL MATERIAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, although the higher the foaming pressure, the easier it is to suppress the diffusion or escape of gas from the bubbles to the matrix carbon, and thus the easier it is to prepare foamed carbon with better foaming effect, but it is difficult to achieve high foaming pressure in industrial production. Popularization or practical application; if foaming under near normal pressure is to be realized, higher requirements will be placed on the family composition and rheological behavior of high softening point asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 200g of medium-temperature coal tar pitch in a magnetically stirred reactor, and raise the temperature to 280°C at a heating rate of 5°C / min. During the stirring process, air was introduced, wherein the air flow rate, stirring speed and stirring time were 200mL / min, 200rpm, and 2h, respectively. The softening point of the prepared high softening point pitch is 245°C, the content of n-heptane solubles (HS) is 8.9%, the content of toluene solubles (TS) is 18.3%, the content of toluene insoluble-pyridine solubles (TI-PS ) content was 13.6%, pyridine-insoluble-quinoline-soluble (PI-QS) content was 11.1%, and quinoline-insoluble (QI) content was 57%. 10g of the high softening point asphalt was crushed to 10μm, then placed in a tubular reactor and sealed, first raised to 300°C at a heating rate of 5°C / min and kept at a constant temperature for 2 hours, then raised to 300°C at a heating rate of 10°C / min 600°C and constant temperature for 1h to obtain unfoamed bulk carbon....

Embodiment 2

[0030] The high softening point asphalt prepared in Example 1 was vacuumized at 300°C / 80kPa for 1.5h, and the light components extracted accounted for 8% of the total mass of the high softening point asphalt. Example 1 After the high softening point asphalt is vacuumized, its softening point is 252°C, the content of n-heptane solubles (HS) is 1.2%, the content of toluene solubles (TS) is 12.5%, and the content of toluene insoluble- The pyridine soluble (TI-PS) content was 9.4%, the pyridine insoluble-quinoline soluble (PI-QS) content was 9.9%, and the quinoline insoluble (QI) content was 67%. 10g of the high softening point asphalt was crushed to 10μm, then placed in a tubular reactor and sealed, first raised to 300°C at a heating rate of 5°C / min and kept at a constant temperature for 2 hours, then raised to 300°C at a heating rate of 10°C / min 600°C and constant temperature for 1 hour to obtain foamed carbon with uniform pore size, wherein the average pore size of the foamed c...

Embodiment 3

[0032] The high softening point asphalt prepared in Example 1 was vacuumized at 320°C / 80kPa for 1.5 hours, and the light components extracted accounted for 13% of the total mass of the high softening point asphalt. Example 1 After the high softening point asphalt is vacuumized, its softening point is 257°C, the content of n-heptane solubles (HS) is 0%, the content of toluene solubles (TS) is 10.2%, and the content of toluene insoluble- The pyridine soluble (TI-PS) content was 10.8%, the pyridine insoluble-quinoline soluble (PI-QS) content was 10.2%, and the quinoline insoluble (QI) content was 68.8%. 10g of the high softening point asphalt was crushed to 10μm, then placed in a tubular reactor and sealed, first raised to 300°C at a heating rate of 5°C / min and kept at a constant temperature for 2 hours, then raised to 300°C at a heating rate of 10°C / min 600°C and constant temperature for 1 hour to obtain foamed carbon with uniform pore size, wherein the average pore size of the ...

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Abstract

The invention discloses a high-softening-point asphalt as well as a preparation method and an application thereof. Medium-temperature asphalt is adopted as a raw material to prepare high-softening-point asphalt by adopting an air oxidation method; then partial light components in the high-softening-point asphalt are removed by adopting a vacuumizing method, and finally the high-softening-point asphalt suitable for preparing foam carbon or spinning asphalt can be produced. The softening point of the high-softening-point asphalt is 200 to 280 DEG C, the content of an n-heptane soluble substance (HS) is less than 10 percent, the content of a methylbenzene soluble substance (TS) is less than 20 percent, the content of methylbenzene insoluble-pyridine soluble sustancce (TI-PS) is 9 to 20 percent, the content of pyridine insoluble-quinoline soluble (PI-QS) is 5 to 15 percent, and the content of quinoline insoluble substance (QI) I 50 to 70 percent. The high-softening-point asphalt is not only rich in raw materials and low in cost, but also narrow in group composition distribution and suitable for being used as a raw material for high-performance foam carbon and carbon fibers.

Description

technical field [0001] The invention relates to a high softening point asphalt and the preparation technology of the high softening point asphalt. It also relates to the application of the high softening point pitch in the preparation of foam carbon and carbon fiber. Background technique [0002] As a honeycomb carbonaceous functional material, foam carbon not only has high strength, low thermal conductivity, low density, low thermal expansion coefficient, high temperature resistance, oxidation resistance, acid resistance, alkali resistance, low water absorption, no volatile substances, no Toxic gas, and has good formability and processability. Therefore, foamed carbon can be widely used as A-level energy-saving building insulation materials, aerospace insulation materials, high-temperature pipeline insulation materials, and biological solid bacteria carrier materials for biological sewage treatment. [0003] At present, the raw materials used to prepare foamed carbon main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/04D01F9/145C01B31/02
CPCC01B32/05C10C3/00C10C3/04C10C3/14D01F9/145D01F9/15
Inventor 刘春法陶军金洁夏剑忠张秀云陈晓峰詹亮许耀许冰霍云霞
Owner BAOWU CHARCOAL MATERIAL TECH CO LTD
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